What is the Big O Notation? Understanding Time Complexity with only GCSE A Level Math Knowledge

I first stumbled upon time complexity concept 3 years ago in 2020. I spent 1 hour devouring the materials on Wikipedia but had no clue what it is.

3 years later, after watching the solutions of 5 Leetcode questions, I realised that I have to learn and understand more about time complexity and the Big O notation.


It took me one week to take action and I finally understood a little more through these YouTube shorts:

Further Readings:



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